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CVE-2025-37935 (GCVE-0-2025-37935)

Vulnerability from cvelistv5 – Published: 2025-05-20 15:21 – Updated: 2026-08-05 11:58
VLAI
Title
net: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM If the mtk_poll_rx() function detects the MTK_RESETTING flag, it will jump to release_desc and refill the high word of the SDP on the 4GB RFB. Subsequently, mtk_rx_clean will process an incorrect SDP, leading to a panic. Add patch from MediaTek's SDK to resolve this.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2d75891ebc09ba9cf30697dfd54497ef0220308f , < cb625f783f70dc6614f03612b8e64ad99cb0a13c (git)
Affected: 2d75891ebc09ba9cf30697dfd54497ef0220308f , < 317013d1ad13524be02d60b9e98f08fbd13f8c14 (git)
Affected: 2d75891ebc09ba9cf30697dfd54497ef0220308f , < 67619cf69dec5d1d7792808dfa548616742dd51d (git)
Affected: 2d75891ebc09ba9cf30697dfd54497ef0220308f , < 6e0490fc36cdac696f96e57b61d93b9ae32e0f4c (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.90 , ≤ 6.6.* (semver)
Unaffected: 6.12.28 , ≤ 6.12.* (semver)
Unaffected: 6.14.6 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM\n\nIf the mtk_poll_rx() function detects the MTK_RESETTING flag, it will\njump to release_desc and refill the high word of the SDP on the 4GB RFB.\nSubsequently, mtk_rx_clean will process an incorrect SDP, leading to a\npanic.\n\nAdd patch from MediaTek\u0027s SDK to resolve this."
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              "value": "AV:N - The vulnerable code is the ethernet RX NAPI descriptor-recycling path, executed for every frame received on a WAN/LAN-facing port of an MT7988 router SoC, and the state that triggers it (RX FIFO overflow, free-queue-empty, DMA hang, atomic allocation failure) is produced by a sustained inbound packet flood that can be routed from anywhere. No local access or L2 adjacency is required to deliver the traffic.\nAC:L - An attacker driving sustained traffic reliably produces the RFIFO_OV/FQ_EMPTY/DMA-hang conditions that schedule SER, and once MTK_RESETTING is set every in-flight NAPI descriptor deterministically takes the release_desc path and gets its ADDR64 clobbered; the 4GB-straddling buffer placement that makes the corruption harmful is the default state on any affected 4GB+ board.\nPR:N - Triggering requires only sending network frames to the device \u2014 there is no credential check, socket ownership, or capability gate anywhere between packet arrival and mtk_poll_rx().\nUI:N - The corruption occurs entirely within the driver\u0027s receive and reset paths with no victim action required.\nS:U - The corrupted DMA address and the resulting panic stay within the kernel\u0027s own security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - Because the re-armed descriptor points at the wrong physical page, the buffer handed up as an skb contains stale kernel memory rather than the received frame, and on a router that content can be forwarded back onto the wire; the bogus dma_unmap_single() over unrelated physical memory compounds the exposure.\nI:H - The RX DMA engine is handed a descriptor whose 36-bit address is off by up to 4GB, so the NIC writes attacker-supplied packet bytes into arbitrary unrelated kernel memory \u2014 an out-of-bounds DMA write with attacker-controlled contents that is leverageable for control-flow hijacking.\nA:H - The documented symptom is a kernel panic when mtk_rx_clean() unmaps the corrupted SDP during system error recovery, taking the entire device down."
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    "cveId": "CVE-2025-37935",
    "datePublished": "2025-05-20T15:21:59.381Z",
    "dateReserved": "2025-04-16T04:51:23.971Z",
    "dateUpdated": "2026-08-05T11:58:28.431Z",
    "state": "PUBLISHED"
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      "date": "2026-09-10",
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Si la funci\u00f3n mtk_poll_rx() detecta el indicador MTK_RESETTING, saltar\u00e1 a release_desc y rellenar\u00e1 la palabra alta del SDP en la RFB de 4 GB. Posteriormente, mtk_rx_clean procesar\u00e1 un SDP incorrecto, lo que provocar\u00e1 un p\u00e1nico. Se ha a\u00f1adido un parche del SDK de MediaTek para solucionar esto.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/mediatek/mtk_eth_soc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2d75891ebc09ba9cf30697dfd54497ef0220308f\",\"lessThan\":\"cb625f783f70dc6614f03612b8e64ad99cb0a13c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2d75891ebc09ba9cf30697dfd54497ef0220308f\",\"lessThan\":\"317013d1ad13524be02d60b9e98f08fbd13f8c14\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2d75891ebc09ba9cf30697dfd54497ef0220308f\",\"lessThan\":\"67619cf69dec5d1d7792808dfa548616742dd51d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2d75891ebc09ba9cf30697dfd54497ef0220308f\",\"lessThan\":\"6e0490fc36cdac696f96e57b61d93b9ae32e0f4c\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/mediatek/mtk_eth_soc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.6\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.6\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.90\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.28\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.14.6\",\"lessThanOrEqual\":\"6.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6\",\"versionEndExcluding\":\"6.6.90\",\"matchCriteriaId\":\"391F5581-3B83-445C-A49A-D27F71214D1B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.28\",\"matchCriteriaId\":\"5082CE19-0F3D-4521-AB3E-810D8255F500\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.14.6\",\"matchCriteriaId\":\"19E5095E-5950-43EA-8E78-FC860855293F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8D465631-2980-487A-8E65-40AE2B9F8ED1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4C9D071F-B28E-46EC-AC61-22B913390211\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"13FC0DDE-E513-465E-9E81-515702D49B74\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"8C7B5B0E-4EEB-48F5-B4CF-0935A7633845\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/317013d1ad13524be02d60b9e98f08fbd13f8c14\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/67619cf69dec5d1d7792808dfa548616742dd51d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6e0490fc36cdac696f96e57b61d93b9ae32e0f4c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cb625f783f70dc6614f03612b8e64ad99cb0a13c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:25:54+00:00",
      "cve": "CVE-2025-37935",
      "id": "CVE-2025-37935",
      "initial_release_date": "2025-05-20T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-37935.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.